idk what to make ( i somewat new ) only thing i dont get is how to get gear like teir 1-10 etc.. all that gear shet thats it. but anyways Which should i make a druid or a lock and why?

PS- are demon locks good especially at raids or not?
also whats a good druid build? ( my 1st druid)

Explain why i should be that also. right now im a goblin warrio idk if warrior is my thing because i somewat hate using rage it's hardto build sometimes.